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// file : tests/base64/driver.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <string>
#include <vector>
#include <sstream>
#include <libbutl/base64.hxx>
#undef NDEBUG
#include <cassert>
using namespace std;
using namespace butl;
// Test base64 encoding and decoding.
//
static bool
encode (const string& i, const string& o)
{
// Test encoding.
//
istringstream is (i);
string s (base64_encode (is));
bool r (s == o && is.eof ());
if (r)
{
is.seekg (0);
// VC15 seekg() doesn't clear eofbit.
//
#if defined(_MSC_VER) && _MSC_VER < 1920
is.clear ();
#endif
assert (!is.eof ());
ostringstream os;
base64_encode (os, is);
r = os.str () == o && is.eof ();
}
if (r)
r = base64_encode (vector<char> (i.begin (), i.end ())) == o;
// Test decoding.
//
if (r)
{
istringstream is (o);
ostringstream os;
base64_decode (os, is);
r = os.str () == i;
}
if (r)
{
ostringstream os;
base64_decode (os, o);
r = os.str () == i;
}
if (r)
{
vector<char> v (base64_decode (o));
r = string (v.begin (), v.end ()) == i;
}
return r;
}
// Test base64url encoding only (decoding not yet implemented).
//
static bool
encode_url (const string& i, const string& o)
{
istringstream is (i);
string s (base64url_encode (is));
bool r (s == o && is.eof ());
if (r)
{
is.seekg (0);
// VC15 seekg() doesn't clear eofbit.
//
#if defined(_MSC_VER) && _MSC_VER < 1920
is.clear ();
#endif
assert (!is.eof ());
ostringstream os;
base64url_encode (os, is);
r = os.str () == o && is.eof ();
}
if (r)
r = base64url_encode (vector<char> (i.begin (), i.end ())) == o;
return r;
}
int
main ()
{
// base64
//
assert (encode ("", ""));
assert (encode ("B", "Qg=="));
assert (encode ("BX", "Qlg="));
assert (encode ("BXz", "Qlh6"));
assert (encode ("BXzS", "Qlh6Uw=="));
assert (encode ("BXzS@", "Qlh6U0A="));
assert (encode ("BXzS@#", "Qlh6U0Aj"));
assert (encode ("BXzS@#/", "Qlh6U0AjLw=="));
// base64url: no padding in output.
//
assert (encode_url ("", ""));
assert (encode_url ("B", "Qg"));
assert (encode_url ("BX", "Qlg"));
assert (encode_url ("BXz", "Qlh6"));
assert (encode_url ("BXzS", "Qlh6Uw"));
assert (encode_url ("BXzS@", "Qlh6U0A"));
assert (encode_url ("BXzS@#", "Qlh6U0Aj"));
assert (encode_url ("BXzS@#/", "Qlh6U0AjLw"));
// Multi-line input.
//
const char* s (
"class fdstream_base\n"
"{\n"
"protected:\n"
" fdstream_base () = default;\n"
" fdstream_base (int fd): buf_ (fd) {}\n"
"\n"
"protected:\n"
" fdbuf buf_;\n"
"};\n");
// base64
//
const char* r (
"Y2xhc3MgZmRzdHJlYW1fYmFzZQp7CnByb3RlY3RlZDoKICBmZHN0cmVhbV9iYXNlICgpID0gZGVm\n"
"YXVsdDsKICBmZHN0cmVhbV9iYXNlIChpbnQgZmQpOiBidWZfIChmZCkge30KCnByb3RlY3RlZDoK\n"
"ICBmZGJ1ZiBidWZfOwp9Owo=");
assert (encode (s, r));
// base64url: no newlines or padding in output.
//
r =
"Y2xhc3MgZmRzdHJlYW1fYmFzZQp7CnByb3RlY3RlZDoKICBmZHN0cmVhbV9iYXNlICgpID0gZGVm"
"YXVsdDsKICBmZHN0cmVhbV9iYXNlIChpbnQgZmQpOiBidWZfIChmZCkge30KCnByb3RlY3RlZDoK"
"ICBmZGJ1ZiBidWZfOwp9Owo";
assert (encode_url (s, r));
// Test 63rd and 64th characters: `>` maps to `+` or `-`; `?` maps to `/` or
// `_`.
//
assert (encode (">>>>>>", "Pj4+Pj4+"));
assert (encode_url (">>>>>>", "Pj4-Pj4-"));
assert (encode ("??????", "Pz8/Pz8/"));
assert (encode_url ("??????", "Pz8_Pz8_"));
}
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